MantisBT before 1.2.9 does not audit when users copy or clone a bug report, which makes it easier for remote attackers to copy bug reports without detection.
https://github.com/mantisbt/mantisbt/commit/dea7e315f3fc96dfa995e56e8810845fc07a47aa
http://www.securityfocus.com/bid/52313
http://www.openwall.com/lists/oss-security/2012/03/06/9
http://www.mantisbt.org/bugs/view.php?id=13816
http://www.mantisbt.org/bugs/changelog_page.php?version_id=140
http://www.debian.org/security/2012/dsa-2500
http://security.gentoo.org/glsa/glsa-201211-01.xml
http://secunia.com/advisories/51199
http://secunia.com/advisories/49572
http://secunia.com/advisories/48258
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093064.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093063.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092926.html